Publication

Enhancement of Ambisonics signals using time-frequency masking

International Conference on Audio for Virtual and Augmented Reality (AVAR)


Abstract

Spatial audio is an essential part of virtual reality. Unlike synthesized signals, spatial audio captured in the real world may suffer from background noise which degrades the quality of the signals. While some previous works have addressed this problem, and suggested methods to attenuate the undesired signals while preserving the desired signals with minimum distortion, these only succeed partially. Recently, methods aiming to achieve preservation of the desired signal in its entirety have been proposed, and in this work we study such methods that are based on time-frequency masking. Two masks were investigated: one in the spherical harmonics (SH) domain, and the other in the plane wave density (PWD) function domain, referred to here as the spatial domain. These two methods were compared with a low-end reference method that uses a single maximum directivity beamformer followed by a single channel time-frequency mask. A subjective investigation was conducted to estimate the performance of these methods, and showed that the spatial mask preserves the desired sound field better, while the SH mask preserves the spatial cues of the residual noise better.

Related Publications

All Publications

Acustico: Surface Tap Detection and Localization using Wrist-based Acoustic TDOA Sensing

Jun Gong, Aakar Gupta, Hrvoje Benko

ACM UIST - October 19, 2020

Constraining Dense Hand Surface Tracking with Elasticity

Breannan Smith, Chenglei Wu, He Wen, Patrick Peluse, Yaser Sheikh, Jessica Hodgins, Takaaki Shiratori

SIGGRAPH Asia - December 1, 2020

Beamforming-based Binaural Reproduction by Matching of Binaural Signals

Lior Madmoni, Jacob Donley, Vladimir Tourbabin, Boaz Rafaely

AVAR - August 17, 2020

SqueezeSegV3: Spatially-Adaptive Convolution for Efficient Point-Cloud Segmentation

Chenfeng Xu, Bichen Wu, Zining Wang, Wei Zhan, Peter Vajda, Kurt Keutzer, Masayoshi Tomizuka

ECCV - August 24, 2020

To help personalize content, tailor and measure ads, and provide a safer experience, we use cookies. By clicking or navigating the site, you agree to allow our collection of information on and off Facebook through cookies. Learn more, including about available controls: Cookies Policy